Home / 13,617,858.19-18,792,078.69-7,422,768.61

Finding the Fourth Proportional to 13,617,858.19, 18,792,078.69 and 7,422,768.61

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Solution

The fourth proportional to 13,617,858.19, 18,792,078.69 and 7,422,768.61 is: 10,243,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617,858.19 : 18,792,078.69 = 7,422,768.61 : x
  2. Step 2: Convert to fraction form
    13,617,858.19/18,792,078.69 = 7,422,768.61/x
  3. Step 3: Cross multiply
    13,617,858.19x = 18,792,078.69 × 7,422,768.61
  4. Step 4: Simplify right side
    13,617,858.19x = 139,489,251,816,781.94
  5. Step 5: Solve for x
    x = 139,489,251,816,781.94/13,617,858.19
  6. Step 6: Final answer
    x = 10,243,112.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.